Sets the specified group differential Port Direction.
Gx5641SetGroupDifferentialPortDirection (nHandle, nGroup, dwDirection, pnStatus)
Name |
Type |
Description |
nHandle |
SHORT |
Handle to a GX5641 board. |
nGroup |
SHORT |
Group value is as follows: 0. GX5641_GROUP0 (channels 0 to 31) 1. GX5641_GROUP1 (channels 32 to 63) |
dwDirection |
DWORD |
Group’s output state. Each of the 32-bits represents a channel in the group. Bit 0 is the first channel in the group and bit 31 is the last channel in the group. Bit low - channel port is set as input. Bit high - channel port is set as output. |
pnStatus
|
PSHORT |
Returned status: 0 on success, negative number on failure. |
For protection, by default all channel’s connections (TTL and Deferential) are disabled after power-up and reset. The channels can be enabled and or disabled by calling Gx5641SetGroupOutputState.
Note: Only channels in the group that were set to Static I/O mode prior calling this function by calling Gx5641SetGroupMode will be set.
The following example sets group 0 Differential Port channels 0, 4, 8 direction to output:
Gx5641SetGroupDifferentialPortDirection (nHandle, GX5641_GROUP0, 0x00000111, &nStatus);
Gx5641GetGroupDifferentialPortDirection, Gx5641SetGroupDifferentialPort, Gx5641SetGroupMode, GxPioGetErrorString